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Use the interactive map below to check population changes. Zoom in to see where Podocnemis unilfilis is Endangered based on IUCN Redlist criteria - A3bd.

This is an extension of Norris et al 2019 that includes:

  • stochastic population projections
  • threats caused by human acessibility (hunting and habitat change) and actions that reduce river connectivity.

Due to the number of points, the map can become slow to respond when you zoom in. Zoom out to a level showing fewer points and you can pan around the map to find the area of interest. Then zoom in again to check the coloured points.

When you zoom in you will see shaded points. Points are brown where populations are expected to decline by 50% or more within 3 generations (42 years). Brown points therefore represent rivers where the species is Endangered, following the IUCN Redlist criteria - A3bd.

A summary of the results is presented below.

Country Endangered (prop) river length (km) length End. length not End.
Bolivia 0.91 18739 17098 1641
Brazil 0.75 123498 92740 30758
Colombia 0.62 18037 11266 6771
Ecuador 0.95 3330 3176 154
French Guiana 0.76 1833 1390 443
Guyana 0.70 4675 3272 1403
Peru 0.91 23447 21304 2143
Suriname 0.54 3908 2103 1805
Venezuela 0.69 18382 12623 5759

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